Graph a circle when the equation is not in standard form

The video tutorial explains how to graph an equation by identifying it as a circle. It starts with recognizing a non-standard form of an ellipse equation and transforming it into a standard form. The tutorial then identifies the equation as a circle, calculates the center and radius, and demonstrates how to graph it. The process includes estimating the radius and plotting the circle on a graph.

What is the value of R-squared in the equation discussed?

Describe the process of estimating the radius when graphing the circle.